Table of Contents
Advertisement
4 Technical Data
4.9
Earth Current Differential Protection (ANSI 87GN/TN)
Setting Ranges/
Resolution
Inherent Operating
Times
Dropout
Tolerances
Influencing
Variables for
Pickup
422
Differential Current I-REF> I/InO
Characteristic: Basepoint I/InO
Characteristic: Slope
Delay Times T
Phase Current Blocking I> I/InO
Zero Voltage Release U0>
Pickup Times
Dropout Times
Pickup Characteristic
Dropout/Pickup Ratio
Pickup Characteristic
Phase Current Blocking I>
Zero Voltage Release U0>
Delay Times T
Power Supply Direct Voltage in Range
0.8 ≤ U
≤ 1.15
/U
H
HN
Temperature in Range
–5 °C ≤ ϑ
≤ 55 °C
amb
Frequency in Range
0.95 ≤ f/f
≤ 1.05
N
Harmonics
– Up to 10 % 3rd Harmonics
– Up to 10 % 5th Harmonics
0.05 to 2.00
(Increments 0.01)
0.05 to 2.00
0.00 to 0.95
(Increments 0.01)
0.00 to 60.00
(Increments 0.01 s)
or ∞ (does not expire)
1.0 to 2.5
(Increments 0.1)
1.0 to 100.0
(Increments 0.1 V)
oder disabled
Approx. 25 to 55 ms
Approx. 60 ms
Approx. 0.90
Approx. 0.95
5 % of setpoint value or 0.02 I/InO
1 % of setting value or 0.01 I/InO
1 % of setting value or 0.5 V
1 % of setting value or 10 ms
≤ 1 %
≤ 0.5 %/10 K
≤ 1 %
≤ 1 %
≤ 1 %
7UM62 Manual
C53000-G1176-C149-3
Advertisement
Table of Contents
